Home Slickdeals Dallas to Sydney Australia $496 RT Airfares on United Airlines (Travel May-June;... Slickdeals Dallas to Sydney Australia $496 RT Airfares on United Airlines (Travel May-June; Aug-Oct 2019) By ARCOM - 5 February 2019 161 0 SHARE Facebook Twitter Go to the deal page: Dallas to Sydney Australia $496 RT Airfares on United Airlines (Travel May-June; Aug-Oct 2019)